so its slightly messy but I have 3 hard drives with windows on them 500gb ssd with fresh windows 10 250ssd with old install of windows 7>8>8.1>10 finally a 320hdd with windows xp 64bit but - I cant get the 500gb to boot ! it *sometimes* boots on its own - but it wont boot at all when the other 2 devise are connected any idea`s would be helpful
